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Type D Kouhyouteki Kai (Kouryuu Kai)

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Type D Kouhyouteki Kai (Kouryuu Kai)

No.364 甲標的 丁型改(蛟龍改)

Torpedo-based Weapon Midget Submarine

Effects: Torpedo Attack+17 Accuracy+2 View Range+2

Scrap Value: Fuel4 Ammunition9 Steel12 Bauxite4

Equipment Card Type D Kouhyouteki Kai (Kouryuu Kai).png

Equipment Character Type D Kouhyouteki Kai (Kouryuu Kai).png

Equipment Item Type D Kouhyouteki Kai (Kouryuu Kai).png

Equipment Full Type D Kouhyouteki Kai (Kouryuu Kai).png

Refittable Class
Coastal Defense ShipDestroyer
Light CruiserTorpedo Cruiser
Heavy CruiserAviation Cruiser
BattleshipAviation Battleship
Fast BattleshipLight Carrier
Standard CarrierArmored Carrier
Seaplane TenderSubmarine Tender
SubmarineSubmarine Carrier
Repair ShipTraining Cruiser
Fleet OilerAmphibious Assault Ship



This was an independently developed "Special Submarine" that was an improvement over the previous late-model.
It is an enlarged version of the Type-A Midget Submarine with increased cruising range and communications capability. With the crew count increased to 5 members and 2 bow-mounted 45cm torpedo tubes, this is closer to a mini-submarine than an improved midget submarine.
It was originally designed to be operated from a ship, but this improved model can operate independently to support other ships.


This equipment allows any ship equipped with it to perform opening torpedo attacks. Submarines Lv.10 or higher can preform opening torpedo attacks without a Midget Submarine.

Does not count as a torpedo for cut-ins during night battle despite having a torpedo icon.

How To Obtain

From quests: B141 (choice)

Ranking reward for:

  • Jun 2020: 1-5

Updates History

  • 2020-01-14: Implemented

Fit Bonuses

Ship Extra Requirement Firepower Torpedo Attack Anti-Air Anti-Submarine View Range Armor Evasion Note
Yuubari Kai Ni TokuYuubari Kai Ni Toku +1 +4 -2
Kitakami Kai NiKitakami Kai Ni +2 -2
Ooi Kai NiOoi Kai Ni
Nisshin ANisshin A
Kuma Kai Ni DKuma Kai Ni D
Mogami Kai Ni TokuMogami Kai Ni Toku
Yahagi Kai Ni BYahagi Kai Ni B
+1 -2
Yura Kai NiYura Kai Ni
Abukuma Kai NiAbukuma Kai Ni
Kiso Kai NiKiso Kai Ni
Other AV
-1 -7

See Also